Importance of coal ash composition in protecting the boiler against chlorine deposition during combustion of chlorine-rich biomass

Martti Aho (Corresponding Author), Eduardo Ferrer

Research output: Contribution to journalArticleScientificpeer-review

114 Citations (Scopus)

Abstract

Experiments were carried out in a pilot scale CFB reactor with Meat and Bone Meal (MBM) blended with three coals. MBM has high Cl content, which produces fouling and corrosion in superheaters. Coal ash contains protective elements (Al, Si and S) that are able to trap alkalies, and the HCl that is released does not condense on superheaters. The goal of the study was to select the most protective coal so that the portion of MBM in the feedstock could be maximised. South African coal, with highest content of reactive aluminosilicate, provided more protection against chlorine deposition than did Polish and German coals. Alkali aluminosilicate formation was the main alkali sequestration path, dominating over sulfation.
Original languageEnglish
Pages (from-to)201 - 212
Number of pages12
JournalFuel
Volume84
Issue number2-3
DOIs
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed

Fingerprint

Coal Ash
Coal
Chlorine
Coal ash
Boilers
Meats
Alkalies
Biomass
Superheaters
Bone
Aluminosilicates
Chemical analysis
Fouling
Feedstocks
Corrosion
bone meal
Experiments
aluminosilicate

Keywords

  • waste
  • combustion
  • deposition
  • chlorine

Cite this

@article{f7cd9f0354c1408bb98c2ac42ee6fdab,
title = "Importance of coal ash composition in protecting the boiler against chlorine deposition during combustion of chlorine-rich biomass",
abstract = "Experiments were carried out in a pilot scale CFB reactor with Meat and Bone Meal (MBM) blended with three coals. MBM has high Cl content, which produces fouling and corrosion in superheaters. Coal ash contains protective elements (Al, Si and S) that are able to trap alkalies, and the HCl that is released does not condense on superheaters. The goal of the study was to select the most protective coal so that the portion of MBM in the feedstock could be maximised. South African coal, with highest content of reactive aluminosilicate, provided more protection against chlorine deposition than did Polish and German coals. Alkali aluminosilicate formation was the main alkali sequestration path, dominating over sulfation.",
keywords = "waste, combustion, deposition, chlorine",
author = "Martti Aho and Eduardo Ferrer",
year = "2005",
doi = "10.1016/j.fuel.2004.08.022",
language = "English",
volume = "84",
pages = "201 -- 212",
journal = "Fuel",
issn = "0016-2361",
publisher = "Elsevier",
number = "2-3",

}

Importance of coal ash composition in protecting the boiler against chlorine deposition during combustion of chlorine-rich biomass. / Aho, Martti (Corresponding Author); Ferrer, Eduardo.

In: Fuel, Vol. 84, No. 2-3, 2005, p. 201 - 212.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Importance of coal ash composition in protecting the boiler against chlorine deposition during combustion of chlorine-rich biomass

AU - Aho, Martti

AU - Ferrer, Eduardo

PY - 2005

Y1 - 2005

N2 - Experiments were carried out in a pilot scale CFB reactor with Meat and Bone Meal (MBM) blended with three coals. MBM has high Cl content, which produces fouling and corrosion in superheaters. Coal ash contains protective elements (Al, Si and S) that are able to trap alkalies, and the HCl that is released does not condense on superheaters. The goal of the study was to select the most protective coal so that the portion of MBM in the feedstock could be maximised. South African coal, with highest content of reactive aluminosilicate, provided more protection against chlorine deposition than did Polish and German coals. Alkali aluminosilicate formation was the main alkali sequestration path, dominating over sulfation.

AB - Experiments were carried out in a pilot scale CFB reactor with Meat and Bone Meal (MBM) blended with three coals. MBM has high Cl content, which produces fouling and corrosion in superheaters. Coal ash contains protective elements (Al, Si and S) that are able to trap alkalies, and the HCl that is released does not condense on superheaters. The goal of the study was to select the most protective coal so that the portion of MBM in the feedstock could be maximised. South African coal, with highest content of reactive aluminosilicate, provided more protection against chlorine deposition than did Polish and German coals. Alkali aluminosilicate formation was the main alkali sequestration path, dominating over sulfation.

KW - waste

KW - combustion

KW - deposition

KW - chlorine

U2 - 10.1016/j.fuel.2004.08.022

DO - 10.1016/j.fuel.2004.08.022

M3 - Article

VL - 84

SP - 201

EP - 212

JO - Fuel

JF - Fuel

SN - 0016-2361

IS - 2-3

ER -